Getting all notes from a soundfont - Audacity?

  What I'm trying to do is to generate a set of MP3 files for various instruments (including synthesized sounds)  at each key of the chromatic scale over 2 octaves.    The brute-force method is to dig out the cheap old midi keyboard from the loft, put it through a software synth and record, note by note.  However,  I've just discovered Soundfonts which are a packaged set of samples at some (but not all) notes in the octave  for an instrument which are used to generate a full sample set for a synth.  This would appear to be a method which will give a better result for less effort.  Audacity apparently can do things with soundfonts, but will it allow me to generate a full scale?  Is there other (Windows) software available which will do what I'm after?

Posted by AndyGadget 7 years ago


macePod - The procession project

Hi Art+Tech lovers Is it possible to track a simple object and calculate it's distance with an Arduino + (Arduino-)camera. I would use a simple tele lens so the distance between the camera and the object can range between 0.5 and 10 meters. The camera can be mounted on 2 servo motors for pan-tilt movement. Everything sits on top of a 2m pole, carried by a person.  And best wishes for 2016! Philippe

Posted by sysArt 2 years ago


How would I power a device that uses a 12v ac/dc converter?

I've wanted to make a Korg Kaoss Pad 3 portable for some time now. The problem being that it requires a 12v ac/dc converter to power it, rendering my current task to a standstill.  Is there any way I can power this for a period of time using batteries? If so how many and what would I need to run something like this for several hours (3-5)? Any help would be appreciated.

Posted by INVADER SCOOGE 5 years ago


I'm selling build your own mini synth kits

Hi, I'm selling kits of an Instructable I made to build your own synth. The EM-Tronic: This kit provides you with the components and instructions that you need to build a small handheld digital synth. All you need to do is build the kit and find an enclosure to fit it into. I'm selling them on Etsy: http://www.etsy.com/listing/84467328/em-tronic-synth-pcb-kit Here is the Instructable if you want to build your own: https://www.instructables.com/id/EM-Tronic-Synth/ Cheers, Brian

Posted by rarebeasts 6 years ago


How does the circuit in a music synthesizer work?

I'm a beginner. What i meant by how does the circuit work is, how does the capacitor work in relation to the resistor and what do i connect and what parts do i connect to what/where? I need everything in sequential  order and in simplest form please.

Posted by Naps 7 years ago


The Reactable - A collaborative electronic music instrument

I was watching current earlier on and found this pod:The reactable is a collaborative electronic music instrument with a tabletop tangible multi-touch interface. Several simultaneous performers share complete control over the instrument by moving and rotating physical objects on a luminous round table surface. By moving and relating these objects, representing components of a classic modular synthesizer, users can create complex and dynamic sonic topologies, with generators, filters and modulators, in a kind of tangible modular synthesizer or graspable flow-controlled programming language.The video won't embed, but it's pretty awesome: Current PodThe project's official website is here.The software is open source, although I can't see many details of the hardware.

Posted by whatsisface 10 years ago


"speaking piano" reciting the Proclamation of the European Environmental Criminal Court

A "speaking piano" reciting the Proclamation of the European Environmental Criminal Court at World Venice Forum 2009. Austrian composer Peter Ablinger transferred the frequency spectrom of the childs voice to his computer controlled mechanical piano. (translated from German) Peter Ablinger: I break down this phonography, meaning a recording of something the voice, in this case -, in individual pixels, one can say. And if I have the possibility of a rendering in a fairly high resolution (and that I only get with a mechanical piano), then I in fact restore some kind of continuity. Therefore, with a little practice, or help or subtitling, we actually can hear a human voice in a piano sound. link: youtube

Posted by mikeasaurus 7 years ago


Voice Changer Software Into Voice Changer Hardware

I'm making a costume. It's a cosplay. What I Have: Voxal Voice Changer. I already know it's capable of making exactly the voice I need. What I Need: A way of synthesizing my voice with that voice effect as part of my costume. Is this possible? The voice I need isn't a very complex one, but it's not a simple pitch change, either. All it is is a little flanger and a little vibrato, but so far I can't find voice changer devices that allow this without being hooked up to a smart phone or a computer, nor was I able to find portable voice changers that included this effect. They're all girthy with lights and dials, and that's hard to conceal on a costume. I noticed Voxal has an export voice feature that allows users to create .voxal files out of the voices, so I'm wondering if there are existing voice changers that could have this file uploaded to it some how, or if there is a way to make or modify a voice changer to do this. Let me know what you think.

Posted by AtomicDragon 1 year ago


Subcontrabass Guitar - to build or not to build?

Hey all you musicians, and especially guitar players! I am currently planning the next version of my Prism Laser Guitar (vote for me if you like it!) and I need some opinions.The next version will hopefully sound very much like a real guitar, not a synthesizer. It will also be capable of playing chords among other tricks the first version couldn't do. However, due to physical and monetary restraints, it will have to be a 4-string bass guitar of some sort. That's fine with me - I love bass!So here's the idea: Unhindered by the physical limitations of a vibrating string, I am free to tune the bass as low as I want. I'm thinking of giving it a C#, F#, B, E tuning, with a bottom note of 17.5Hz. That's lower than pretty much any bass you can get, opening up a whole playground of super bass notes to drive neighbours up the wall. ;)Is that something people would be interested in? Or should I stick to a standard bass tuning range?

Posted by jeff-o 9 years ago


It is not advisable to copy the activities shown in this video.

The Modified Toy Orchestra have a philosophy of performing everything live with a collection of re-purposed children’s toys.., converting abandoned playthings into exotic new musical instruments, and then exploring the latent potential and surplus value inherent in these liberated circuits. Guided by this hidden world they seek to make a form of music devoid of personal narrative or autobiography, instead they ask bigger questions about our relationship with “the next new gadget” the desire for the constant upgrade, and the possibilities for problem solutions hidden from our gaze by perceptual habit. The result of this on going investigation has been called cinematic, dark, joyful and life affirming. It is rare to hear an electronic live performance that has no midi, no sampling, no synthesizers, no laptops, in fact no conventional instruments of any kind. MTO have live dates coming up: 8th September at Birmingham Town Hall 10th September at Manchester Bridgewater Hall Hey, what about the title of the topic? Oh, that's from the band's appearance on the BBC website.  After all, these AA batteries are dangerous... Freeno & Olaf from Modified Toy Orchestra on Vimeo.  

Posted by Kiteman 7 years ago


Freaky Optical Illusion!

Here is a cool optical illusion I got in an email:'The Brain'This is quite amazing..If you see this lady turning in clockwise you are using your right brain. If you see it the other way, you are using left brain.Some people do see both ways, but most people see it only one way.See if you can make her go one way and then the other byshifting the brain's current.BOTH DIRECTIONS CAN BE SEENExperimentation has shown that the two different sides, or hemispheres,of the brain are responsible for different manners of thinking.The following table illustrates the differences between left-brain andright-brain thinking:Left Brain Right BrainLogical RandomSequential IntuitiveRational HolisticAnalytical SynthesizingObjective SubjectiveLooks at Looks atparts wholesMost individuals have a distinct preference for one of these styles of thinking. Some, however, are morewhole-brained and equally adept at both modes.In general, schools tend to favor left-brain modes ofthinking, while downplaying the right-brain activities.Left-brain scholastic subjects focus on logical thinking,analysis, and accuracy. Right-brained subjects, on theother hand, focus on aesthetics, feeling, and creativity.If you look away, she may switch from one direction to the other.I found that if I just look at her feet or relax and look at the floorwhere the reflection shows, she will switch direction!

Posted by Arbitror 10 years ago


Electr'Ocarina of Time

Hi there! Okay so here i am with this idea i've been tackle with for weeks. Hold tight it's a long presentation. Brief Basically, i would like to make en electronic version of the Ocarina of time from Zelda. I would like to keep it really simple at least for the first step. So it will look like a proper ocarina but instead of holes there will be 6 arcade buttons ( Red, Green and 4 yellow as a reminder of the N64 gamepad buttons). Each button is assigned a note wich will be played while blowing through a microphone. The sound will be a synthesized sinewave that would be played thanks to a speaker. Will be great also if the device could work on a USB chargeable battery. I Have been doing researches on how to make it for a while now, though could'nt find exactly what i was looking for and not sure how to fit different parts together to make a worrkable fork. So i believe i have two options. As you may guess i am fairly new to electronics, programming and electronic music (Lol i read that all the times). To be as clear as possible i am gonna put some schemes of how i picture myself the electronic but i really don't know how it's supposed to be managed, i mean i know there will be some resistors, capacitors or whatever between the "function blocks" i draw but i have absolutely no clue of what should actually really appear. Option 1 - Analog So i made this stylophone few months ago : https://www.instructables.com/id/A-Stylophone/ It is based on a 555 timer (i also saw some mini synths based on this component). It felt to me as a good starting point. Volume would be controlled through the mic instead of a pot and i would get rid of the pitch pot and all the unecessary notes. But i would like it to sound more fluty and so i found this tuto on how to make a sinewave but don't know how to use it in this project (or even if possible) : http://www.learningaboutelectronics.com/Articles/Sine-wave-generator-circuit-with-a-555-timer.php Regarding the microphone part I've also seen this insctrutable but the synth seemed to me way over what i planed to do in terms of sound synthesis ability : https://www.instructables.com/id/Arduino-Flute-Synth/ Option 2 - Digital So comes option 2 wich consist in using an arduino to synthesize the wave that would play if microphone is HIGH and if button 1 is High key 1 would be played etc. The scheme I provided seem definitely wrong to me but that's a first shot anyway. About sound synthesis with arduino i found this library i havent gone through the tutorial yet but it seem a little bit picky. http://sensorium.github.io/Mozzi/ So as you see i am kinda lost and a little clarification would be awesomely nice. I am actually working in a fablab and i would like to develop this project to be used as a workshop. Im pretty sure lots of old grown up kids would love to get a little ocarina. There are some other options i would like to implement (regarding what happend if you press several buttons or none) but well first things first. Hope you like the Idea, hope you can help. Love, Starsheeps and Electro-cupcakes! Adrien

Posted by ElectroSoja 1 year ago


HAL 9000 Open Source Community Project - Announcement and Invitation

Goal:  Build a HAL 9000 Series Computer Specification:  "2001: A Space Odyssey" Website:  www.hal9000project.org Instructable coming soon I watching "2001: A Space Odyssey" the other night and I decided it would be cool to build one.  I've never managed a project this big, and don't plan to start doing it now, so hopefully people will step up and assume various roles and responsibilities.  A project like this needs a program manager, deputy program manager, project managers, systems engineers, software engineers, programmers, graphic designers, web developers,etc.  I'll assume the role of chief engineer and chief software architect.  Also needed are an admin for the sourceforge project, and a webmaster for hal9000project.org.  I don't plan on having any special rules or regulations, I'm just throwing this out there to see what comes of it.  It could end up in a hairball of chaos, or it could evolve into a smooth running machine, although I suspect nobody will join in and it'll be just me with nobody watching. This is not a far fetched pipe dream.  The IBM Watson has already beaten the reigning champion on Jeopardy. I'll be defining all the individual subprojects such as the speech recognition function, lip reading function, speech synthesizer (it will have the exact voice used in the movie,) facial recognition function, voice recognition function, object recognition, various other artificial intelligence functions, neural network, physical mockup, physical prototype, software simulation, etc. There is a distinct possibility of getting government funding and along with commercial grants, therefore, some people could theoretically carve a full time job out of this.  That would work for me.

Posted by el_roboto_loco 7 years ago


Instructables is going to be at the UK Makers Faire!

Instructables will be showcasing at this years upcoming Makers Faire UK in Newcastle! We have lots of goodies to hand out, and will have some projects on show for people to enjoy. I will be joined by, SteveAstroUK LizzyAstro Jayefuu PKM Kiteman Kitewife Rainbow_Han Last years Makers Faire was a lot of fun, I very much recommend it. I am delighted that we will have our own instructables stall this year. We very much look forward to seeing you at the faire, and be sure to let us know if you are a fellow instructablian.  Jake - gmjhowe - Maker Faire UK 12-13 March 2011 The world-famous Maker Faire returns to the UK to headline Newcastle ScienceFest. Expect a weekend of cool robots, garden-shed inventions, knitted wonders, the occasional fireball and oodles of opportunities to make your own creations. Perfect for creative people of all ages! At Maker Faire, come and play with classic synthesizers, see live 3D printing, learn to solder, play musical Tesla coils, become a Guerrilla knitter, turn a beer can into a pinhole camera, use a Wii balance board to control a robot, make your own stop-motion movie and much more… This special event takes place simultaneously at Centre for Life and Discovery Museum with one Access-All-Areas ticket available. This ticket enables you to see all of Maker Faire plus Life’s planetarium, motion simulator ride and brand-new under 7’s gallery. Tickets are available on the day or in advance. Opening hours: Saturday: 10.00 to 17.00 Sunday: 11.00 to 17.00 Head over to the Maker Faire UK website for more information.

Posted by gmjhowe 7 years ago


Making Copper (II) Chloride From Acid and Copper

Ok, so last 4th I made fireworks for a small- and I mean small- display, and it turned out fairly well. I only had two complaints- a) It wasn't that colorful, as I was only using pine and palm charcoal for color: reddish orange.b)it wasn't electrical, and took alot of visco, as I wanted everything to go off near-instantaneously. Well, I am going to solve problem b by getting e-matches off of Skylighter, but solving a is a little harder. Then, I read that certain copper compounds could be added to create a green to green-blue color in the flame. Well, I like that idea, but I didn't know where to get the copper compounds. So I kinda left it. UNTIL TODAY!I found this page on making copper (II) chloride. Well, it seemed straightforward enough, so I was going to try it. I was only wondering about two things:a) why on the description on this page about it include hydrogen peroxide, but the page does not even mention it?b)is this safe? I guess I should be outside for the hotplate part- I can't imagine boiling/simmering HCI, inside.c) is this even possible? Does it: 1)create a form of copper that could be used with success in pyrotechnics? 2)create copper chloride at all?Any answers are appreciated. Even if they don't directly pertain to the topic, POST ANYWAY! Makes it more interesting.

Posted by John Smith 10 years ago


Design and the Elastic Mind @ MOMA until May 12

I just stumbled across this wonderful exhibition at the MOMA in NY, which will be running until May 12. If you browse the online exhibit, you'll see a bunch of technologies and artworks that have graced these pages previously, but there's tonnes more of Really Cool Stuff - definitely worth passing by if you happen to be in New York...Design and the Elastic Mind, February 24-May 12, 2008View the Online Exhibit!In the past few decades, individuals have experienced dramatic changes in some of the most established dimensions of human life: time, space, matter, and individuality. Working across several time zones, traveling with relative ease between satellite maps and nanoscale images, gleefully drowning in information, acting fast in order to preserve some slow downtime, people cope daily with dozens of changes in scale. Minds adapt and acquire enough elasticity to be able to synthesize such abundance. One of design's most fundamental tasks is to stand between revolutions and life, and to help people deal with change. Designers have coped with these displacements by contributing thoughtful concepts that can provide guidance and ease as science and technology evolve. Several of them—the Mosaic graphic user's interface for the Internet, for instance—have truly changed the world. Design and the Elastic Mind is a survey of the latest developments in the field. It focuses on designers' ability to grasp momentous changes in technology, science, and social mores, changes that will demand or reflect major adjustments in human behavior, and convert them into objects and systems that people understand and use.The exhibition will highlight examples of successful translation of disruptive innovation, examples based on ongoing research, as well as reflections on the future responsibilities of design. Of particular interest will be the exploration of the relationship between design and science and the approach to scale. The exhibition will include objects, projects, and concepts offered by teams of designers, scientists, and engineers from all over the world, ranging from the nanoscale to the cosmological scale. The objects range from nanodevices to vehicles, from appliances to interfaces, and from pragmatic solutions for everyday use to provocative ideas meant to influence our future choices.

Posted by Patrik 10 years ago


HCl obtention from bleach and acetic acid (vinegar).

I have always been curious to know if it is possible to obtain hydrochloric acid (HCl) from chlorine-based bleach and acetic acid (vinegar). I found a lot of answers saying that it was impossible and dangerous because you wouldn't obtain HCl; instead, you would get chlorine gas, which is a very dangerous fume that can cost your life. However, I found an answer saying that it was possible to synthesize it, but not directly from bleach. First, you have to mix equal quantities of bleach and acetic acid to obtain hypochlorous acid (HClO) and then you have to add a transition metal oxide (iron oxide, copper oxide, etc.) to get HCl and oxygen gas.  Filled with curiosity and keeping in mind that safety is the priority, I decided to try it out by mixing equal portions of bleach (NaOCl) and acetic acid (C2H4O2), obtaining an aqueous solution of hypochlorous acid (HClO) and sodium acetate (C2H3NaO2).  NaClO + C2H4O2—> HClO + C2H3NaO2 Then, I added copper oxide (rusty pennies) since I know that copper by itself reacts very slowly with HCl, so I could leave it there until the copper oxide had completely reacted with the HClO (leaving clean pennies).  Little but numerous bubbles started to come out which I thought to be the oxygen gas leaving the hypochlorous acid. I waited there until there were no more bubbles coming out which meant that the reaction had finished. To prove that it was HCl, I decided to add Aluminium foil and see if it reacted accordingly. However, nothing happened, so I tried the whole process of mixing bleach and vinegar again but when I got to the part of adding the metal oxide, I did not add copper oxide. Instead, I left it outside in the sun to react since I know that ultraviolet radiation causes fast disproportionation, forming HCl and oxygen gas.   HClO —> HCl + O2 After all the bubbles had finished coming out, I added Aluminium foil to prove that it was HCl. However, noting happened, and again, I obtained the same product as the last time.  I immediately stated to think of possible products that I could have obtained and the reasons why my reaction hadn't worked properly. It was then when I remembered that in the very first reaction (the one of the vinegar and the bleach) I had obtained a side product that I had completely forgotten about; sodium acetate (C2H3NaO2). And I suspect that this side product could have affected the whole process.  And that is my question; was it really the sodium acetate that one that affected the experiment or could have it been something else?

Posted by Joseluismi 10 months ago


Electron Club Open Day Show and Tell, Glasgow 13 June

Electron Club Open Day2pm-8pm Saturday 13th June 2009Centre for Contemporary Arts (CCA), 350 Sauchiehall Street, Glasgow, G2 3JDThe Electron Club is a voluntary run space where people interested in things like free open source software, circuit bending, hardware hacking, computer recycling, streaming, audio and video editing, green technologies, and amateur radio can meet, use equipment, and share anddisseminate their skills and ideas. The space supports both individuals developing their own projects and a number of group projects, all of which are not-for-profit initiatives with a community, educational or environmental aspect to them.Now in our third year, the Electron Club Open Days are an opportunity to see and try out a range of things that people do, as well as having the opportunity to meet others with similar interests, make, chat, discuss and enjoy.TESLA SOUL - Electron Club Makers Fair and homebaking - Bajery in the Makery!Stalls and demos by electronic makers, designers and artists. An opportunity to see and play with some of the projects created by Electron Club members and related groups - a theremin menagerie and mini synthesizer kits, 3D paper engineering, circuit bending, micro FM radio,DIY wind power technology, creative computer trash recycling, 101 things to do with a dead keyboard and much more. Plus some of the excellent home-baking that has been hallmark of all our Open Days. Come and do a bit of soldering or have a cup of tea and chat with the people who make things.TAPE-WIRE-HEAD-SCREEN - music, film and sound artsThe Electron Club includes many people working in music, film and experimental arts. For the Open Day we will be showing a preview of films from Document, the UK's leading human rights film festival, with works ranging from front-line reportage to cinematic explorations of what it is to be human, along with films made at the Electron Club by the Digital Desperados, a film-group for young black and Asian women. We'll have a live performance of Alvin Lucier's legendary "Music on A Long Thin Wire" by members of 'Obscure Desire of the Bourgeoisie' and BuffalobuffalobuffaloBuffalobuffalo'. Outdoors, artist Lucie Potter will invite people on a specially planned sound walk around the Garnethill area.THE LIFE OF SOCIAL THINGS - socially-engaged technology forumA series of discussions about different ways in which society and technology come together.Glasgow FabLabsFabLabs are small scale fabrication and construction workshops that provide computerised production technologies on an artisanal scale making them available to communities and independent makers and designers. From inner-city Boston to remote Indian villages, FabLabshave become a worldwide network of community technology centres. Glasgow FabLabs is a project aiming to bring such a centre to Glasgow. This forum will present the ideas behind the Glasgow FabLabs project and explore the benefits of community-access technology.Community Media and Citizens JournalismThe internet has offered a platform for communities and groups outside of the mainstream media to have a voice and share knowledge. Whilst there are many notable examples of such activity, the tools to create such a democratized media space are still often out of people's reach.This forum will look at some practical examples of community media coming from Glasgow, present some current projects looking to make ordinary people's voices more prominent and explore the relationships between the grass-roots and mainstream media.Technology, Social Justice and the EnvironmentHow can we use technology for the greater common good? Whilst the advance of technology promotes the promise of a better world, that promise has often been compromised or undermined in how we make use of such advances. Certain technological developments have contributed to environmental and social problems on a scale arguably never seen before.Technology, however, has also been used to tackle such issues as climate change and social injustice. This forum will share and explore some practical examples being used in Scotland today, from noise monitoring devices to participatory video and community mapping projects.RAFFLE - broadband fundraiserThis year we are raising funds to improve our network facilities at the Electron Club and we will be doing a raffle with prizes including a group voucher to go paintballing.http://www.electronclub.org Contact: openday@electronclub.org

Posted by greensteam 9 years ago